Weiland, former frontman with Stone Temple Pilots and Velvet Revolver, was found dead inside a bus on Dec. 3 while on tour with his new band the Wildabouts in Bloomington, Minn. The new report determines that a combination of cocaine, ethanol and the amphetamine MDA stopped his heart.

Weiland had a history of cardiovascular disease, as well as asthma and multi-substance dependence, the medical examiner noted. (His many run-ins with the law included a 1995 arrest with crack and heroin, and a guilty plea for felony heroin possession two years later.) The report places Weiland time of death at 8:27PM.

Police had found an "unknown white substance packaged in baggies" inside Weiland's bedroom on the bus, packaged "common with the way narcotics are packaged," according to a separate police report from that night. They also noted assorted sleeping pills, Viagra and Ziprasidone, which Weiland used to treat his bipolar disorder. Elsewhere, a bag of cocaine was discovered in the bunk of bassist Tommy Black, who was subsequently arrested.

Weiland rose to fame with Stone Temple Pilots, who won a Grammy in 1993 for the song "Plush." Their first four albums sold at least a million copies each, led by the eight-times platinum debut, Core. Weiland later joined Velvet Revolver, which featured Guns N’ Roses members Slash, Duff McKagan and Matt Sorum.